Autoamtic paper-cutting machine



Feb. 24, 1953 J. M. SHAW ET AL 2,

AUTOMATIC PAPER-CUTTING MACHINE Filed July 11, 1946 5 Sheets-Sheet l cfcziizea f? 57201 Zea/lie f fZzw 2 W w WW6??? Feb. 24, 1953 J. M. SHAW ET AL AUTOMATIC PAPER-CUTTING MACHINE 5 Sheets-Sheet 2 flame/260715. china? j fificzza 65166 flaw Filed July 11, 1946 Feb. 24, 1953 J. M. SHAW ET AL AUTOMATIC PAPER-CUTTING MACHINE 5 Sheets-Sheet 3 Filed July 11, 1946 Feb. 24, 1953 .1. M. SHAW ET AL AUTOMATIC PAPER-CUTTING MACHINE 5 Sheets-Sheet 4 Filed July 11, 1946 Jigs/6e .ffzzzs W W M Feb. 24, 1953 J. M. SHAW ET AL 2,629,440

AUTOMATIC PAPER- CUTTING MACHINE Filed July 11, 1946 5 Sheets-Sheet 5 &

PAPER FfEfl/IVG MECHA lV/SN 3 Ma w Patented Feb. 24, 1953 UNITED STATES PATENT oF-Fica AUTOMATIC PAPER-CUTTING MACHINE James M. Shaw and Leslie I. Faus, Chicago, 111., assignors, by direct and mesne assignments, to Harry Rosenthal, Chicago, Ill.

Application July 11, 1946, Serial No. 682,800

20 Claims.

This invention relates generally to paper cutting devices and in particular to an automatic paper cutting machine adapted to automatically cut paper to varying lengths and feed the same onto a wrapping table.

In the prior art, it has been customary practice in wrapping departments of stores, laundries. etc., to provide a wrapping table with a roll of paper mounted thereon and a knife bearing against the roll of paper so that when the desired length of paper is unrolled the paper may be pulled against the edge of the knife to thereby cut the paper from the roll. This device, although simple and eiiective is both laborious and time consuming. In order to cut the paper,-

the piece being taken from the roll must be held high in the air and considerable force is required to out the paper especially when using paper of heavy weight and of tough composition; In most wrapping departments the Workis performed by women and the exertion required in tearing the paper is very tiring. Also as the paper must be held high to be-torn off, some time is required to place the paper on the table and then place the articles to be wrapped thereon. It has been found that, using this procedure, half of the wrapping time is required to obtain a piece of paper of the desired size.

Another procedure used in wrapping departments is to provide the paper already cut in predetermined lengths and have a quantity of the various lengths available so that the Wrapper may select a piece of paper of the desired length vfrom the supply. This requires having a large supply of paper available, and in many cases the quantity of the various lengths used will differ from time to time so that the wrapping department will run out of a particular length and have :an oversupply of other lengths. This causes great inconvenience and delay in the Wrapping of articles. In this procedure considerable time is also required to obtain the paper from the supply cabinet and to select the desired length of paper.

It is an object of the present invention to pro 'vide an automatic paper cutting machine which overcomes one or more of the objections set forth above.

It is a further object of this invention to provide a paper cutting machine which automatically feeds paper from a roll onto a wrapping table and cuts the paper to the desired lengths.

It is another object of this invention to provide a simple and automatic paper cutting machine adapted to out pieces of paper of predetermined lengths and a control system therefor which permits selection of the various lengths as desired by the operator.

It is a still further object of this invention to provide an automatic paper cutting machine 2 whereby by operation of simple controls, pieces of paper of various predetermined lengths will be selectively fed onto a wrapping table.

A feature of this invention is the provision of an automatic paper cutting machine including means for receiving a roll of paper and feeding predetermined lengths of the paper through a knife which is adapted to automatically cut ofi the paper.

An additional feature of this invention is the provision of a paper cutting machine adapted for use with a wrapping table which is arranged to automatically. feed paper from a roll onto a wrapping table and cut off the paper at the desired lengths.

Another feature of this invention is the provision of a combined electrical and pneumatic control system for an automatic paper cutting machine whereby by actuation of various push buttons, pieces of paper of varying lengths are provided by the machine.

A still further :feature of this invention is the provision of an automatic paper cutting machine which is .adapted to automatically provide pieces of paper of varying lengths having a control mechanism which may be set for a plurality of lengths which are desired and includes push button controls for selecting any one of said plurality of lengths of paper.

Other objects, features and advantages will be apparent from a consideration of the following description taken in connection with the accompanying drawings in which:

Fig. 1 is a perspective view showing the general configuration of the paper cutting machine and wrapping table in accordance with the invention;

Fig. 2 is a cross-sectional view along the lines 2--2 of Fig. 1 showing the operating mechanism:

Fig. 3 is a detailed cross sectional view of the operating mechanism;

Fig. 4 is a detailed view of the timer setting mechanism;

Fig. 5 is a diagram of the combined pneumati and electrical control system; and

feed paper from the roll onto the Wrapping table,

a knife being provided for cuttin off the piece of paper to be used. A push button operated control system is included for automatically feeding the desired amount of paper on the wrapping table and then cuttin off this piece of paper. A control system is arranged so that each of a plurality of push buttons can be set to control a timer to feed a predetermined length of paper so that any one of a plurality of predetermined lengths can be obtained by operating the push button set up for that length. The control system can be either a combined pneumatic and electrical system or may be an all electrical system.

Referring now to the drawings, in Fig. 1 there is illustrated a wrapping table In having a cabinet I l thereunder and a projecting portion I2 at the rear thereof. An automatic paper feeding and cutting mechanism is enclosed in the cabinet H and the projecting portion l2 as will be hereinafter described. At the side of the projecting portion I2 is positioned a master switch I3 for applying power to the paper cutting mechanism and a pilot light l4 indicating when the power is on. The cover of the portion i2 is hinged at IE to permit easy access to the operating mechanism. A slot I6 is provided through which the paper is fed onto the table 10. At the front of the table II) is positioned a control panel I! with three push button controls l8 positioned therein. The panel I! and push buttons [8 are arranged to be flush with the table I ll so that they will not interfere with the wrapping operation to be performed on the table. There also may be provided a recess container IS in the table for containing pencils, stamps or other objects which may be used in marking the packages when wrapped.

Reference is now made to Figs. 2, 3 and 4 which show the details of the paper feeding and wrapping mechanism. A roll of paper is positioned on a spindle 2! which is supported by bearings 22 mounted on the framework of the cabinet I End plates 23 are provided for holding the roll of paper in position on the spindle 2 i, any suitable arrangement may be used which will permit the spindle to be removed so that a new roll of paper can be placed thereon as required. As clearly shown in Fig. 2, the paper 24 is fed over a feeding wheel 25 which has the circumference thereof covered with rubber 26 or other suitable material to provide friction between the wheel 25 and the surface of the paper. An idler 21 is positioned to bear against the paper to provide sufficient pressure thereon so that movement of the feeding wheel 25 will cause the paper to be unrolled from the roll 25. For the purpose of preventing undesired rotation of the roll of paper 20, a bar 30 bearing against the roll is provided. The bar includes arms 3| pivotally supported by brackets 32 to the frame structure. Springs 33 secured to an adjustable arm 34 permits application of the desired tension to the bar 30. It may be desirable in some instances to provide a brake for the spindle 2| operated along with the brake on the paper feeding mechanism which will be described.

To provide even feeding of the paper, a plurality of feeding wheels 25 and idlers 21 are spaced across the width of the paper feeding mechanism. A curved guide plate 28 is provided having portions extending between the wheels 25 so that the paper will not buckle, and cut out portions 29 (Fig. 3) positioned around the wheels 25 so that it will not interfere with the operation thereof. The guide plate 28 is supported at its upper end on a cutting base comprised of angle members 35 and 36 having a space therebetween in which a knife 37 operates. The angle members are positioned in an opening in the wrapping table Ill, the members being flush with the table to provide a continuous surface over which the paper is fed. The idler wheels 21 are supported by arms 38 pivotally connected to a bracket 39 secured to the back of the table l0. For the purpose of lifting the idler wheels 2! off the paper when feeding paper into the paper cutting mechanism, as when putting in a new roll of paper, a member 40 is provided also hinged to the table [0 which bears against the lower surface of the arms 38. By turning the member Gil, the idlers 21 are raised out of position. A deflecting plate 4| cooperates with the guide plate 28 to insure that the paper passes in the proper manner below the knife and onto the wrapping table. Instead of using a plurality of feeding wheels and a guide plate therebetween, a feeding drum can be used which would support the paper continuously along its width.

For driving the feeding wheels 25, a motor 45 is provided which is shown in Fig. 3 as driving a shaft 46 through a belt 41. A worm gear 48 is provided on the shaft -45 which meshes with gear 49 on the shaft 50 on which the feeding wheels 25 are supported. A brake wheel 5! is also secured to the shaft 45 against which brake shoe 52 bears. The brake is pneumatically operated by piston 53 operating in cylinder 54.

The detailed construction of the knife 37 is shown in Fig. 3. The knife includes a plurality of cutting members 55 riveted to the bar 56. The bar 55 is supported at either end by brackets 51 having portions 5 8 connected to pistons 59 positioned in cylinders 60. The brackets 51 operate in guide 5! to keep the knife in position, the knife being normally held in an upward position by springs 52. Compressed air is forced into cylinders 50 through air line 53 to force the piston 59 downward to thereby operate the knife 37. For the purpose of holding the paper against the cutting edge when the knife operates, a bar 54 is provided which is secured to the knife by rods 65 extending in brackets 56 secured to the knife, springs 61 tending to cause movement of the bar 64 with the knife 31. It is apparent from Fig. 2 that as the knife moves downward, the bar 64 will contact the paper before the cutting members 55 to thereby hold the paper firmly against the angle member 35. As the knife moves farther down the springs 5'! will be stretched allowing the cutting members to pierce the paper.

For controlling the feeding and cutting mechanism there is provided a measuring or timing mechanism including a timer disc 10 supported on a carriage 'H pivotally connected to rod 12 which is secured to a frame member 73 supported on the cabinet. As shown in Fig. 3, the carriage is arranged so that the weight of the disc 10 causes the edge of the disc to bear against the bearing member 74 secured to the feeding wheel 25. The timer disc 10 is secured to a shaft 15 and a timer cam 15 is secured to the other end of the shaft. Accordingly it is seen that as the feeding wheel 25 rotates, the timer disc 10 will be driven causing movement of the timer cam 16. When a feeding drum is used, as suggested, an additional disc arranged to move with the feeding drum is provided against which the timer cam operates. The timer cam 15 includes a projection 11 arranged to engage the switch contact 78 as will be explained in detail hereinafter.

The timer carriage H is arranged to be moved longitudinally on the rod 72 by arm 80 connected through linkage 8! and lever 82 to a timer setting mechanism. The timer setting mechanism is shown in detail in Fig. 4. The push buttons 18 on the wrapping table I 0 operate air valves 83,

84 and $5 to permit air to enter the cylinders 86, 8'! and 88. The entry of air into the cylinder 86, for example, causes the plunger 89 to be moved in a direction to contact the timer setting member 90. The plunger 09 also engages the switch actuating member St to cause the switch 92 to be closed. The plungers each include a projecting member 93 having a spring 94 which tends to force the member out of the plunger. The projecting member 93 bears against the timer setting member 90 and causes the plunger 89 to move back into the cylinder 86 when air pressure is no longer applied thereto. This permits the switch actuating member M to return to the normal position opening the switch 92.

The timer setting members 911 include fingers 95, E6 and 91 adapted to engage arms 90, t5 and I00 respectively which are secured to the shaft IOI. Movement of the timer setting member 90 by a plunger 89 causes the finger 95, for example, to move the arm 98 in engagement with stop I02. Movement of the arm at is transmitted through shaft It! lever t2 and linkage 81 to the timer carriage ll. Accordingly, it is seen that the position of the stop It? determines the position of the timer disc 70 with respect to he bearing member 74. The oher timer fingers 98 and 91 are adapted to bear against additional arms 99 and Hit also secured to shaft Hill to operate through linkage- 8| to provide diife-rent positions of the carriage El and different relative positions of the timer disc "It with respect to the bearing member M. It is pointed out that the end timer fingers 55 and 9'! bear against arms 98 and I0!) which are moved into abutment with stops i0 2 and I03 to determine the position thereof whereas the intermediate finger 96 includes upper and lower portions which bear against the ends of arm 99 to thereby determine the position of this arm. In setting each push button to provide the amount of paper desired, it is necessary for the arms 98, 9t and 505} to move so that the timer carriage assumes a particular position as will be explained. As the position of the end arms 53 and We are determined by adjustable sto-ps m2 and let, these two positions of the carriage can be set by adjustment of the stops. Intermediate arms such as 99 may be adjusted on shaft It! to thereby control the position of lever 02 when the arm is tional push button controls for setting the timer to still additional positions by providing more fingers constructed as finger 36 hearing against additional arms constructed as arm 99.

The operation of the timer mechanism and the manner in which the timer controls the amount of paper fed by the feeding wheels 25 will now be explained. When the timer carriage ll is set in a given position as determined by one of the push buttons it, the control circuit causes the motor to start to thereby drive the feeding wheels 25. As the feeding wheels revolve the timer disc it also revolves causing rotation of the timer cam it. When the projection TI on the timer cam engages the switch 78 the circuit through the motor is broken and the brake 51 is energized to thereby suddenly stop movement of the feeding wheels 25. It is thus seen that in controlling the, feeding mechanism, the timer disc and cam in each case make one complete revolution, but the number of revolutions of the feeding wheel 25 required for one revolution of the timer disc It depends on the relative position of the timer disc '50 with respect to the wheel 25. That is, when the timer disc I0 is close to axle 50 the line of contact of the disc Ill on the wheel 25 is a circle of small circumference and thereby causes a relatively small movement of the edge of the timer disc for each revolution of the wheel 25. In such case, a large number of revolutions of the wheel 25 will be required to cause one complete revolution of the timer disc it. On the other hand, if the timer disc l0 bears against the wheel 25 near the periphery thereof, the contact between the disc is] and the wheel 25 is a circle of relatively large circumference to thereby cause greater movement of the edge of the disc It for one revolution of the wheel 25. Accordingly, when a large amount of paper is desired the timer disc it must be positioned near the axle till whereas if a small amount of paper is required the disc 70 must be positioned near the circumference of the wheel 25.

It is believed that the operation of the control system of the paper feeding and cutting device will be apparent from a consideration of Fig. 5. The control system illustrated is a combined electrio and pneumatic system being connected to a source of electrical power through connectors i it and also connected to a source of compressed air through air line III. The positions of the main switch I3 and pilot light I4 in the circuit are shown. The cylinders 86, 81 and 83 are con nected to the source of compressed air through valves 83, 8d and 85 which are operated by the push buttons 58. As previously stated, when any one of these valves is operated, the plunger connected therewith acts to close the switch 92 which closes a circuit through the coil IIZ of the relay H3. This'closes the switches lit and H5 in the relay, the switch lHlenergizing the motor 55 and. the switch 5 is establishing a holding circuit through the coil H2. The motor 45 therefore starts and drives the wheel 25 which feeds paper onto the wrapping table. The operation of one of the plungers also sets the timer to one of the predetermined positions and operation of wheel 25 causes the timer and. the cam 18 to revolve. As is apparent, the projection "IT on the timer cam will engage the contact arm '58 causing the arm to be moved away from engagement with contact IiB thus breaking the holding circuit from the relay H3 deenergizing motor 55. At the same time the contact arm ill will be moved into engagement with contact II'I thereby energizing the coil H0 of the relay Ilii. This causes the contacts I26 and Hit of the relay to be closed, the contact I29 establishing a holding circuit and the contact I2I energizing the electromagnetic air valve I22. The air valve I22 applies air to the cylinder 54 which operates brake 52 and to the cylinders 89 which operate the knife 3?. Movement of the knife 31 causes the portion 58 of the bracket connected thereto to engage the contact I24 of switch i25 breaking the holding circuit thereby releasing the brake and the knife. This brings all the components back to their normal position so that a second operation may be had by operating one of the push buttons i8.

It is noted that the timer cam will move the switch contact 78 away from contact H5 and into engagement with III for only a short instant as the cam will continu to revolve for a short period of time until the motor has stopped assess and the brake is applied. The cam will stop in substantially the same position after each operation so that the distance the projection must travel before it engages the contact I8 is the some in every instance. However, as previously explained the amount of rotation of the feeding wheels and the amount of paper fed before the timer operates depends upon the relative position of the timer T5 with respect to the plate 'ic. It is, therefore, seen that the operation of the device is completely automatic requiring only actuation of a push button to provide the complete operating cycle.

Fig. 6 illustrates schematically a modification of the paper feeding and cutting mechanism in which the pneumatic control system is dispensed with and a system utilizing electrical controls only is provided. The modified arrangement will be of the same general configuration and the various components will be identical with the exceptions to be noted. The timer setting membars 90 will be actuated by the magnetic cores I3I, I32 and I33 of electromagnets I34, I35 and I35. These electromagnets are energized by switches I37, I38 and I39 operated by push buttons I8 as in the modification previously described. The operation of the switches will, in addition to setting the timers, also energize coil I43 in relay I4I. Instead of providing a motor which is started and stopped by the control system, an arrangement is illustrated in which the motor operates continuously and the paper feeding mechanism is driven through a clutch I42. The clutch is operated by electromagnet I43 which is controlled by switch contacts I44 of the relay I4I. (It is pointed out here that such an arrangement could also be used in the modification previously described.) The relay I4I includes an additional set of contacts I45 which establishes a holding circuit through the coil I40. This circuit extends to contact I45 which is in engagement with the contact I8 controlled by cam I6. As the paper feeding mechanism is driven by engagement of clutch I42 the timer operates causing the cam I6 to rotate and the projection I'I thereon to engage contact I8 breaking the holding circuit of relay I4I. Contact I8 at the same time engages contact I41 energizing coil I48 in relay I49. This causes switches I and I5I of the relay I49 to be closed, switch I5| establishing a holding circuit through the coil I48 and switch I50 energizing electromagnet I53 which is connected to brake I54 to stop the movement of the paper feeding mechanism. For the purpose of operating knife 31 electromagnet I55 is provided which is energized through the switch I50 of relay I49 and through an additional switch I55 which is connected to the brake I54. The switch I55 is operated when the brake I54 is applied thereby preventing energization of eleotromagnet I55 and operation of knife 31 until the brake I54 has been operated. This arrangement is provided because it is essential that the paper feeding mechanism is stopped before the knife operates. Operation of the knife 3'! opens the switch I52 in the holding circuit to thereby release the relay I49 and deenergize electromagnets I53 and I55. This restores the device to the normal position so that a second operation can be performed.

The construction of the electromagnets, clutch, brake and other elements of the modification of Fig. 6 are not illustrated as any available units can be used and the invention is not limited to particular structures. The knife 31, for example, may be actuated by motor through an additional clutch similar to clutch I42 and a mechanical linkage, instead of being solenoid operated as described. In general the arrangement of the elements of the modification of Fig. 6 is the same as that illustrated in Figs. 1 to 4. It is to be particularly noted that the mode of operation and the general construction of both modifications described are identical.

The use of the paper cutting and feeding mechanism in combination with a wrapping table as herein described has been found to be highly satisfactory and has permitted the reduction of personnel in wrapping departments more than half. This results from the saving in the time required to tear off or otherwise obtain a piece of paper of the required size and also in the reduction in fatigue of the persons doing the wrapping. It is apparent that paper of the desired size is automatically placed in a position on the wrapping table so that it will not have to be moved prior to wrapping articles therein. The operator, after determining the size of paper required, merely pushes one of the push buttons I8 and thereafter picks up the article to be wrapped. By the time the article is placed on the wrapping table, the paper has automatically been placed thereon thus providing a very fast and efficient operation. The construction of the paper feeding and cutting device is sturdy and relatively simple so that very little maintenance is required and dependable operation results.

Although we have described what we consider to be the preferred embodiments of our invention, it is apparent that various changes and modifications can be made and that various features of one embodiment may be included in the other without departing from the intended scope of our invention. Accordingly, we desire that the invention be limited only as defined in the appended claims.

We claim:

1. An automatic paper cutting machine including means for receiving a roll of paper, means for feeding paper from said roll, timing means including a portion driven by said feeding means and adapted to be set to cause said feeding means to feed the desired amount of paper, said timing means being capable of being preset to a plurality of positions, means for cutting off the paper fed by said feeding means. and a control system including a plurality of push buttons each of which is adapted to cause said timin means to be set to one of said positions and to in tiate operation of said feeding means, said t '11:: means being adapted to stop said feeding means and to cause operation of said paper cutting means when the desired amount of paper has been fed.

2. An automatic paper cutting machine including means for receiving a roll of paper means for feeding paper from said roll including .ator and, a brake, timing means for controlling said feeding means having a portion coupled to said feeding means and moving in timed relation therewith, said timing means being capable of being preset to a plurality of positions for causing said feeding means to feed corresponding amounts of paper, means for cutting off the paper fed by said feeding means including a knife and actuating means therefor, and a control. system including a plurality of push buttons each of which is adapted to cause said timing means to be set to one of said positions and to energize said motor, means actuated by said timing means 9 for operating said brake to stop said feedin means and for operating said paper cutting means.

3. An automatic paper cutting machine including means for receiving a roll of paper, means for feeding paper from said roll, means for cutting off the paper fed from said roll, and a control system for said feeding and cutting means including a timer having portions individually adjustable to various positions to thereby control the length of paper fed by said feeding means, said timer being coupled to said feeding means and responsive to operation thereof, said portions being individually preset to positions corresponding to any desired length of paper within a given range, and means for simultaneously setting said timer to a preset position and initiating operation of paper feeding means, said timer being arranged to stop said paper feeding means and cause operation of said cutting means.

4. An automatic paper cutting machine including means for receiving a roll of paper, means for feeding paper from said roll including a driving wheel having a side face which presents a flat circular surlace, timing means for controlling said feeding means including a disc having the edge thereof in engagement with said flat surface and adapted to be rotated by movement of said wheel, said disc being arranged to be moved with respect to said wheel along a radius of said Wheel so that the relative movement of said wheel and said disc can be regulated, a cam connected to said disc and adapted to rotate therewith, means for cutting on the paper fed by said paper feeding means, a control system including means for setting the position of said disc with respect to said wheel and for causing operation of said driving wheel, means operated by said cam when said disc has made one complete revolution for stopping movement of said driving wheel and for causing operation of said paper cutting means.

5. In an automatic paper cutting machine including means for receiving a roll of paper, means for feeding paper from said roll, timing means having a plurality of preset positions for controlling the amount of paper fed by said feeding means, and means for cutting off the paper fed by said feeding means; a control system including means for selectively rendering one of said preset positions of said timing means operative and for starting operation of said feeding means, said timing means having a portion coupled to said feeding means and moving in timed relation therewith, and means controlled by said timing means for stopping said feeding means and for actuating said cutting means.

6. In an automatic paper cutting machine ineluding means for receiving a roll of paper, means for feeding paper from said roll, timing means coupled to said feeding means and having a portion moving in timed relationtherewith for controlling the amount of paper fed by said feeding means in accordance with the setting thereof, and means for cutting on the paper fed by said feeding means; a control system including means for setting said timing means to predetermined positions, a plurality of push buttons for selectively actuating said setting means and for starting operation of said feeding means, each of said push buttons causing said timing means to be set to one of said predetermined positions to thereby cause the feeding of a given length of paper, and means controlled by said timing means for stopping said feeding means and for actuating said cutting means.

, 7. In an automatic paper cutting machine in,-

cluding means for receiving a roll of paper, means for feeding paper from said roll, timing means coupled to said feeding means and responsive to operation thereof for controlling the amount of paper fed by said feeding means in accordance with the setting of said timing means, and means for cutting off the paper fed by said feeding means; a control system including a plurality of push buttons, a plurality of plungers controlled by said push buttons, each of said plungers being arranged to set said timing means to a predetermined position corresponding to a particular desired amount of paper, a circuit for controlling said paper feeding means including a switch adapted to be actuated by movement of any one of said plungers for initiating operation of said paper feeding means, means actuated by said timing means for stopping the operation of said paper feeding means and for causing operation of said paper cutting means when the desired length of paper has been fed.

8. In an automatic paper cutting machine including means for receiving a roll of paper, means for feeding paper from said roll including electrical driving means and a pneumatic brake therefor, timing means for controlling the amount of paper fed by said feeding means in accordance with the setting thereof, and pneumatically operated means for cutting off the paper fed by said feeding means; a control system including a plurality of push buttons, a plurality of air valves controlled by said push buttons, a plurality of cylinders connected to said air valves having plungers movable by application of air to said cylinders, said plungers being arranged to set said timing means to predetermined positions, an electrical circuit including a relay and a switch adapted to be closed by movement of any one of said plungers to operate said relay, said relay including switches for energizing said paper feeding means and for establishing a holding circuit for said relay, a second relay means controlled by said timing means for breaking said holding circuit for energizing said second relay when the desired length of paper has been fed, an electromagnetic valve for applying air to said brake and said paper cutting means to cause operation thereof, said second relay including a switch for controlling energization of said electromagnetic valve and a switch for establishing a holding circuit through said relay, and a switch actuated by said paper cutting means for breaking said holding circuit of said second relay.

9. In an automatic paper cutting machine including means for receiving a roll of paper, means for feeding paper from said roll including elec trical driving and braking means, timing means for controlling the amount of paper fed by said feeding means in accordance with the setting thereof, and electrically operated means for cutting off the paper fed by said feeding means; a control system including a plurality of push buttons, a plurality of electrical circuits each including an electromagnet having a plunger and a switch for energizing said electromagnetcontrolled by one of said push buttons, said plungers being arranged to set said timing means to predetermined positions, a relay having a coil for operating the same, said coil being adapted to be energized upon closing of any one of said switches, said relay including contacts for energizing said paper feeding means and for establishing a holding circuit for said relay, a second relay, means controlled by said timing means for breaking said holding circuit and for energizing said second relay when the desired length of paper has been fed, said second relay including contacts for energizing said brake and additional contacts for establishing a holding circuit through said relay, a switch for energizing said paper cutting means adaptedto be closed by operation of said brake, and a switch for breaking said holding circuit of said second relay arranged to be actuated by movement of said paper cutting means.

1,0, An automatic paper cutting machine comprising means for receiving a roll of paper, means forfeedin paper from said roll including elec-' trical driving and braking means, timing means for controlling the amount of paper fed by said feeding means in accordance with the setting thereof, electrically operated means for cutting off the paper fed by said feeding means, and a control system including a plurality of push buttons, a plurality of electrical circuits each including an electromagnet having a plunger and a switch for energizing said electromagnet controlled by one of said push buttons, said plungers being arranged to set said timing means to predetermined positions, a relay having a coil for operating the same, said coil being adapted to be energized upon closing of any one of said switches, said relay including a switch for causing operation of said paper feeding means and a switch for establishing a holding circuit for said relay, a second relay, said timing means being adapted to break said holding circuit and energize said second relay when the desired length of paper has been fed, said second relay including a switch for energizin said brake and a switch for establishing a holding circuit through said relay, a switch for energizing said paper cutting means adapted to be closed by operation of said brake, and a switch for breakingsaid holding circuit of said relay arranged to be actuated by movement of said paper cutting means.

11. An automatic paper cutting machine comprising means for receiving a roll of paper, means Qrjfeeding paper from said roll, an electric motor for driving said paper feeding means, an electrically operated clutch for connecting said motor, to said paper feeding means, an electromagnetically operated brake for stopping movement of said paper feeding means, timing means for. controlling the amount of paper fed by said feeding means :in accordance with the setting thereof, means for cutting off the paper fed by said feeding means, electromagnetic means for operating said paper cutting means, and a control system including a plurality of push buttons, a'plurality of electrical circuits each including an electromagnet having a plunger and a switch for energizing said electromagnet controlled by one of said push buttons, said plungers being arrangedto set said timing means to predetermined positions, a relay having a coil operating the same, said coil being arranged in said circuits to be energized upon closing of any one of said switches, said relay including contacts for operating said electric clutch and for establishing a holding circuit for said relay, a second relay, said timing means being arranged to break said holding circuit and energize said second relay when the desired length of paper has been fed, said second relay including contacts for energizing said brake and additional contacts for establishinga holding circuit through said relay, aswitch for energizing said paper cutting means adapted 'tobe'closed by operation of said brake, and a switch for breaking said holding circuit of said relay arranged to be actuated by movement of said paper cutting means.

12. An automatic paper cutting machine comprising means for receiving a roll of paper, means for feeding paper from said roll including electrical driving means and pneumatic brake, timing means for controlling the amount of paper fed by said feeding means in accordance with the setting thereof, pneumatically operated means for cutting off the paper fed by said feeding means, and a control system including a plurality of push buttons, a plurality of air valves controlled by said push buttons, a plurality of cylinders connected to said air valves having plungers movable by application of air to said cylinders, said plungers being arranged to set said timing means to predetermined positions, an electrical circuit including a relay and a switch adapted to be closed by movement of any one of said plungers to operate said relay, said relay including a switch for energizing said paper feeding means and a switch for establishing a holding circuit for said relay, a second relay, said timing means being arranged to break said holding circuit and to energize said second relay when the desired length of paper has been fed, an electromagnetic valve for applying air to said brake and said paper cutting means to cause operation thereof, said second relay including a switch for controlling energization of said electromagnetic valve and a switch for establishing a holding circuit through said relay, and a switch actuated by said paper cutting means for breaking said holding circuit of said second relay.

13. An automatic paper cutting machine comprising means for receiving a roll of paper, means for feeding paper from said roll, timing means for controlling the amount of paper fed by said feeding means in accordance with the setting thereof, brake means for stopping said paper feeding means, means for cutting off the paper fed by said feeding means, and a control system for controlling operation of said aforesaid means, said control system including first and second relays and a plurality of push buttons, said push buttons being arranged to set said timing means to predetermined positions and to energize said first relay, said first relay including a. switch for controlling operation of said paper feeding means and a switch for establishing a holding circuit through said first relay, said timing means being arranged to break said holding circuit through said relay and energize said second relay when the desired amount of paper has been fed, said second relay including a switch for controlling said brake means and said cutting means and a switch for establishing a holding circuit through said second relay, and a switch arranged to be actuated by said cutting means for breaking the holding circuit through said second relay.

14. An automatic paper cutting machine including a spindle for receiving a roll of paper,

feeding means including portions engaging said means including a portion driven by said feeding means and operating to stop said feeding means'and'to cause operation of said knife means when said feeding means has operated to feed the length of paper corresponding to the member which is selected.

15. An automatic paper cutting machine including a spindle for receiving a roll of paper, feeding means including portions engaging said paper and driving neans therefor, cutting means for severing the length of paper fed by said feeding means, and a control system including a plurality of push buttons and measuring means operatively associated with said feeding means, said measuring means including a plurality of members individually adjustable to preset positions which correspond to any desired length of paper within a predetermined range, said push buttons being effective when operated to select one of said members and to start operation of said feeding means, said measuring means including a portion driven by said feeding means and causing said control system to operate when the length of paper corresponding to the memher which is selected has been fed to stop said feeding means and to cause operation of said knife means.

16. An automatic paper cutting machine including means for receiving a roll of paper, feeding means including a plurality of wheels engaging said paper and a motor and a brake therefor, knife means for cutting off the paper fed by said feeding means, and a control system including a plurality of push buttons and measuring means operatively associated with said f eding means, said measuring means including a plurality of members individually adjustable to preset positions corresponding to any desired lengths of paper, said push buttons being effective when operated to select one of said members and to start said motor, said control system having a portion coupled to said feeding means and being operative when the length of paper corresponding to the member which is selected has been fed to stop said motor, operate said brake, and operate said knife means.

17. An automatic paper cutting machine including means for receiving a roll of paper, means for feeding a length of paper from said roll, means for cutting off said length of paper, and a push button operated electrical control system for automatically controlling said feeding means and said cutting means, said control system including a portion coupled to said feeding means and responsive to operation thereof, a plurality of push buttons and adjustable portions individually associated therewith, said push buttons being operable to initiate operation of said feeding means and select the associated portion of said control system, said selected portion controlling said feeding means so that any desired length of paper is fed in accordance with the adjustment of said selected portion.

18. An automatic sheet material cutting machine including in combination, means for receiving a roll of sheet material, means for feeding sheet material from said roll, means for cutting ofi the sheet material fed from said roll, and an electrical control system for said feeding and cutting means including a timer having a plurality of portions individually adjustable to various preset positions which correspond to the desired lengths of sheet material to be fed by said feeding means, said timer also having a portion moving in timed relation with said feeding means and cooperating with said adjustable portions to cause a timed operation of said control system. and push button means for selecting one of said preset portions and for simultaneously initiating operation of said feeding means, said timer operating to stop said feeding means and to cause operation of said cutting means when the length of sheet material corresponding to the selected preset portion has been fed.

19. An automatic sheet material cutting device adapted for use with a wrapping table including in combination, means for receiving a roll of sheet material, means for feeding sheet material from said roll onto said wrapping table, controlling means for said feeding means having a plurality of adjustable portions which may be preadjusted to positions which correspond to any desired lengths of sheet material within a given range, said controlling means having a portion coupled to said feeding means and moving in timed relation therewith, means for cutting off the sheet material fed, and a push button operated automatic electrical control system for controlling the operation of said feeding means, said controlling means and said cutting means, said control system including push buttons positioned on said wrapping table and individuall associated with said adjustable portions of said controlling means for actuating said controlling means, said control system being operable upon actuation of any one of said push buttons to cause said feeding means to automatically feed on said wrapping table the length of sheet material corresponding to the preadjusted position of said adjustable portion which is associated with the push button selected, and to automatically cut off the length of sheet material fed.

29. In combination an automatic sheet material cutting device and a wrapping table including, means for receiving a roll of sheet material, means for feeding lengths of sheet material from said roll onto said wrapping table, means for cutting off the length of sheet material fed, and an automatic electrical control system responsive to operation of said feeding means for limiting operation of said feeding means and for causing operation of said cutting means, said control system having a portion operatively connected to said feeding means and moving in timed relation therewith, said control system including a plurality of control portions having elements adjustable to positions corresponding to any desired lengths of sheet material within a predetermined range, and a plurality of actuating members in fixed position on said wrapping table and individually operatively connected to said control portions for rendering the same active to control the amount of sheet material fed in accordance with the position of said adjustable element thereof, said automatic control circuit causing operation of said cutting means after a length of sheet material has been fed onto said wrapping table.

JAMES M. SHAW. LESLIE I. FAUS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 574,780 Britton Jan. 5, 1897 1,652,715 Hanscom Dec. 13, 1927 1,960,945 Krueger May 29, 1934 1,996,665 Walker Apr. 2, 1935 2,400,793 Tuska May 21, 1946 2,408,363 Beckman Oct. 1, 1946 

